apps/plugin.c

   1 /***************************************************************************
   2  *             __________               __   ___.
   3  *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
   4  *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
   5  *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
   6  *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
   7  *                     \/            \/     \/    \/            \/
   8  * $Id$
   9  *
  10  * Copyright (C) 2002 Björn Stenberg
  11  *
  12  * This program is free software; you can redistribute it and/or
  13  * modify it under the terms of the GNU General Public License
  14  * as published by the Free Software Foundation; either version 2
  15  * of the License, or (at your option) any later version.
  16  *
  17  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
  18  * KIND, either express or implied.
  19  *
  20  ****************************************************************************/
  21 #include "plugin.h"
  22 #include <ctype.h>
  23 #include <string.h>
  24 #include <stdlib.h>
  25 #include "debug.h"
  26 #include "i2c.h"
  27 #include "lang.h"
  28 #include "led.h"
  29 #include "keyboard.h"
  30 #include "buffer.h"
  31 #include "backlight.h"
  32 #include "sound_menu.h"
  33 #include "mp3data.h"
  34 #include "powermgmt.h"
  35 #include "splash.h"
  36 #include "logf.h"
  37 #include "option_select.h"
  38 #include "talk.h"
  39 #include "version.h"
  40 #include "storage.h"
  41 #include "pcmbuf.h"
  42 #include "errno.h"
  43 #include "diacritic.h"
  44
  45 #if CONFIG_CHARGING
  46 #include "power.h"
  47 #endif
  48
  49 #ifdef HAVE_LCD_BITMAP
  50 #include "scrollbar.h"
  51 #include "peakmeter.h"
  52 #include "bmp.h"
  53 #include "bidi.h"
  54 #endif
  55
  56 #ifdef USB_ENABLE_HID
  57 #include "usbstack/usb_hid.h"
  58 #endif
  59
  60 #ifdef SIMULATOR
  61 #define PREFIX(_x_) sim_ ## _x_
  62 #else
  63 #define PREFIX
  64 #endif
  65
  66 #if defined(HAVE_PLUGIN_CHECK_OPEN_CLOSE) && (MAX_OPEN_FILES>32)
  67 #warning "MAX_OPEN_FILES>32, disabling plugin file open/close checking"
  68 #undef HAVE_PLUGIN_CHECK_OPEN_CLOSE
  69 #endif
  70
  71 #ifdef HAVE_PLUGIN_CHECK_OPEN_CLOSE
  72 static unsigned int open_files;
  73 #endif
  74
  75 #ifdef SIMULATOR
  76 static unsigned char pluginbuf[PLUGIN_BUFFER_SIZE];
  77 void *sim_plugin_load(char *plugin, void **pd);
  78 void sim_plugin_close(void *pd);
  79 void sim_lcd_ex_init(unsigned long (*getpixel)(int, int));
  80 void sim_lcd_ex_update_rect(int x, int y, int width, int height);
  81 #else
  82 #define sim_plugin_close(x)
  83 extern unsigned char pluginbuf[];
  84 #include "bitswap.h"
  85 #endif
  86
  87 /* for actual plugins only, not for codecs */
  88 static bool plugin_loaded = false;
  89 static int  plugin_size = 0;
  90 static bool (*pfn_tsr_exit)(bool reenter) = NULL; /* TSR exit callback */
  91 static char current_plugin[MAX_PATH];
  92
  93 char *plugin_get_current_filename(void);
  94
  95 /* Some wrappers used to monitor open and close and detect leaks*/
  96 static int open_wrapper(const char* pathname, int flags, ...);
  97 #ifdef HAVE_PLUGIN_CHECK_OPEN_CLOSE
  98 static int close_wrapper(int fd);
  99 static int creat_wrapper(const char *pathname, mode_t mode);
 100 #endif
 101
 102 static const struct plugin_api rockbox_api = {
 103
 104     /* lcd */
 105 #ifdef HAVE_LCD_CONTRAST
 106     lcd_set_contrast,
 107 #endif
 108     lcd_update,
 109     lcd_clear_display,
 110     lcd_getstringsize,
 111     lcd_putsxy,
 112     lcd_puts,
 113     lcd_puts_scroll,
 114     lcd_stop_scroll,
 115 #ifdef HAVE_LCD_CHARCELLS
 116     lcd_define_pattern,
 117     lcd_get_locked_pattern,
 118     lcd_unlock_pattern,
 119     lcd_putc,
 120     lcd_put_cursor,
 121     lcd_remove_cursor,
 122     lcd_icon,
 123     lcd_double_height,
 124 #else
 125     &lcd_framebuffer[0][0],
 126     lcd_update_rect,
 127     lcd_set_drawmode,
 128     lcd_get_drawmode,
 129     lcd_setfont,
 130     lcd_drawpixel,
 131     lcd_drawline,
 132     lcd_hline,
 133     lcd_vline,
 134     lcd_drawrect,
 135     lcd_fillrect,
 136     lcd_mono_bitmap_part,
 137     lcd_mono_bitmap,
 138 #if LCD_DEPTH > 1
 139     lcd_set_foreground,
 140     lcd_get_foreground,
 141     lcd_set_background,
 142     lcd_get_background,
 143     lcd_bitmap_part,
 144     lcd_bitmap,
 145     lcd_get_backdrop,
 146     lcd_set_backdrop,
 147 #endif
 148 #if LCD_DEPTH == 16
 149     lcd_bitmap_transparent_part,
 150     lcd_bitmap_transparent,
 151 #if MEMORYSIZE > 2
 152     lcd_blit_yuv,
 153 #if defined(TOSHIBA_GIGABEAT_F) || defined(SANSA_E200) || defined(SANSA_C200) \
 154     || defined(IRIVER_H10) || defined(COWON_D2) || defined(PHILIPS_HDD1630) \
 155     || defined(SANSA_FUZE) || defined(SANSA_E200V2) || defined(SANSA_FUZEV2) \
 156     || defined(TOSHIBA_GIGABEAT_S)
 157     lcd_yuv_set_options,
 158 #endif
 159 #endif /* MEMORYSIZE > 2 */
 160 #elif (LCD_DEPTH < 4) && !defined(SIMULATOR)
 161     lcd_blit_mono,
 162     lcd_blit_grey_phase,
 163 #endif /* LCD_DEPTH */
 164 #if defined(HAVE_LCD_MODES) && (HAVE_LCD_MODES & LCD_MODE_PAL256)
 165     lcd_blit_pal256,
 166     lcd_pal256_update_pal,
 167 #endif
 168     lcd_puts_style,
 169     lcd_puts_scroll_style,
 170 #ifdef HAVE_LCD_INVERT
 171     lcd_set_invert_display,
 172 #endif /* HAVE_LCD_INVERT */
 173 #if defined(HAVE_LCD_MODES)
 174     lcd_set_mode,
 175 #endif
 176 #if defined(HAVE_LCD_ENABLE) || defined(HAVE_LCD_SLEEP)
 177     &button_queue,
 178 #endif
 179     bidi_l2v,
 180     font_get_bits,
 181     font_load,
 182     font_get,
 183     font_getstringsize,
 184     font_get_width,
 185     screen_clear_area,
 186     gui_scrollbar_draw,
 187 #endif /* HAVE_LCD_BITMAP */
 188     get_codepage_name,
 189
 190     backlight_on,
 191     backlight_off,
 192     backlight_set_timeout,
 193 #ifdef HAVE_BACKLIGHT_BRIGHTNESS
 194     backlight_set_brightness,
 195 #endif /* HAVE_BACKLIGHT_BRIGHTNESS */
 196
 197 #if CONFIG_CHARGING
 198     backlight_set_timeout_plugged,
 199 #endif
 200     is_backlight_on,
 201     splash,
 202     splashf,
 203
 204 #ifdef HAVE_REMOTE_LCD
 205     /* remote lcd */
 206     lcd_remote_set_contrast,
 207     lcd_remote_clear_display,
 208     lcd_remote_puts,
 209     lcd_remote_puts_scroll,
 210     lcd_remote_stop_scroll,
 211     lcd_remote_set_drawmode,
 212     lcd_remote_get_drawmode,
 213     lcd_remote_setfont,
 214     lcd_remote_getstringsize,
 215     lcd_remote_drawpixel,
 216     lcd_remote_drawline,
 217     lcd_remote_hline,
 218     lcd_remote_vline,
 219     lcd_remote_drawrect,
 220     lcd_remote_fillrect,
 221     lcd_remote_mono_bitmap_part,
 222     lcd_remote_mono_bitmap,
 223     lcd_remote_putsxy,
 224     lcd_remote_puts_style,
 225     lcd_remote_puts_scroll_style,
 226     &lcd_remote_framebuffer[0][0],
 227     lcd_remote_update,
 228     lcd_remote_update_rect,
 229
 230     remote_backlight_on,
 231     remote_backlight_off,
 232     remote_backlight_set_timeout,
 233 #if CONFIG_CHARGING
 234     remote_backlight_set_timeout_plugged,
 235 #endif
 236 #endif /* HAVE_REMOTE_LCD */
 237 #if NB_SCREENS == 2
 238     {&screens[SCREEN_MAIN], &screens[SCREEN_REMOTE]},
 239 #else
 240     {&screens[SCREEN_MAIN]},
 241 #endif
 242 #if defined(HAVE_REMOTE_LCD) && (LCD_REMOTE_DEPTH > 1)
 243     lcd_remote_set_foreground,
 244     lcd_remote_get_foreground,
 245     lcd_remote_set_background,
 246     lcd_remote_get_background,
 247     lcd_remote_bitmap_part,
 248     lcd_remote_bitmap,
 249 #endif
 250     viewport_set_defaults,
 251 #ifdef HAVE_LCD_BITMAP
 252     viewportmanager_theme_enable,
 253     viewportmanager_theme_undo,
 254 #endif
 255
 256     /* list */
 257     gui_synclist_init,
 258     gui_synclist_set_nb_items,
 259     gui_synclist_set_icon_callback,
 260     gui_synclist_get_nb_items,
 261     gui_synclist_get_sel_pos,
 262     gui_synclist_draw,
 263     gui_synclist_select_item,
 264     gui_synclist_add_item,
 265     gui_synclist_del_item,
 266     gui_synclist_limit_scroll,
 267     gui_synclist_do_button,
 268     gui_synclist_set_title,
 269     gui_syncyesno_run,
 270     simplelist_info_init,
 271     simplelist_show_list,
 272
 273     /* button */
 274     button_get,
 275     button_get_w_tmo,
 276     button_status,
 277 #ifdef HAVE_BUTTON_DATA
 278     button_get_data,
 279     button_status_wdata,
 280 #endif
 281     button_clear_queue,
 282     button_queue_count,
 283 #ifdef HAS_BUTTON_HOLD
 284     button_hold,
 285 #endif
 286 #ifdef HAVE_TOUCHSCREEN
 287     touchscreen_set_mode,
 288 #endif
 289
 290 #ifdef HAVE_BUTTON_LIGHT
 291     buttonlight_set_timeout,
 292     buttonlight_off,
 293     buttonlight_on,
 294 #ifdef HAVE_BUTTONLIGHT_BRIGHTNESS
 295     buttonlight_set_brightness,
 296 #endif /* HAVE_BUTTONLIGHT_BRIGHTNESS */
 297 #endif /* HAVE_BUTTON_LIGHT */
 298
 299     /* file */
 300     open_utf8,
 301     (open_func)open_wrapper,
 302 #ifdef HAVE_PLUGIN_CHECK_OPEN_CLOSE
 303     close_wrapper,
 304 #else
 305     PREFIX(close),
 306 #endif
 307     (read_func)PREFIX(read),
 308     PREFIX(lseek),
 309 #ifdef HAVE_PLUGIN_CHECK_OPEN_CLOSE
 310     (creat_func)creat_wrapper,
 311 #else
 312     (creat_func)PREFIX(creat),
 313 #endif
 314     (write_func)PREFIX(write),
 315     PREFIX(remove),
 316     PREFIX(rename),
 317     PREFIX(ftruncate),
 318     PREFIX(filesize),
 319     fdprintf,
 320     read_line,
 321     settings_parseline,
 322     storage_sleep,
 323     storage_spin,
 324     storage_spindown,
 325 #if USING_STORAGE_CALLBACK
 326     register_storage_idle_func,
 327     unregister_storage_idle_func,
 328 #endif /* USING_STORAGE_CALLBACK */
 329     reload_directory,
 330     create_numbered_filename,
 331     file_exists,
 332     strip_extension,
 333     crc_32,
 334
 335     /* dir */
 336     opendir,
 337     closedir,
 338     readdir,
 339     mkdir,
 340     rmdir,
 341     dir_exists,
 342
 343     /* kernel/ system */
 344 #ifdef CPU_ARM
 345     __div0,
 346 #endif
 347     PREFIX(sleep),
 348     yield,
 349     &current_tick,
 350     default_event_handler,
 351     default_event_handler_ex,
 352     create_thread,
 353     thread_exit,
 354     thread_wait,
 355 #if (CONFIG_CODEC == SWCODEC)
 356     thread_thaw,
 357 #ifdef HAVE_PRIORITY_SCHEDULING
 358     thread_set_priority,
 359 #endif
 360     mutex_init,
 361     mutex_lock,
 362     mutex_unlock,
 363 #endif
 364
 365     reset_poweroff_timer,
 366 #ifndef SIMULATOR
 367     system_memory_guard,
 368     &cpu_frequency,
 369
 370 #ifdef HAVE_ADJUSTABLE_CPU_FREQ
 371 #ifdef CPU_BOOST_LOGGING
 372     cpu_boost_,
 373 #else
 374     cpu_boost,
 375 #endif
 376 #endif /* HAVE_ADJUSTABLE_CPU_FREQ */
 377 #endif /* !SIMULATOR */
 378 #ifdef HAVE_SCHEDULER_BOOSTCTRL
 379     trigger_cpu_boost,
 380     cancel_cpu_boost,
 381 #endif
 382 #if NUM_CORES > 1
 383     cpucache_flush,
 384     cpucache_invalidate,
 385 #endif
 386     timer_register,
 387     timer_unregister,
 388     timer_set_period,
 389
 390     queue_init,
 391     queue_delete,
 392     queue_post,
 393     queue_wait_w_tmo,
 394 #if CONFIG_CODEC == SWCODEC
 395     queue_enable_queue_send,
 396     queue_empty,
 397     queue_wait,
 398     queue_send,
 399     queue_reply,
 400 #endif
 401     usb_acknowledge,
 402 #ifdef USB_ENABLE_HID
 403     usb_hid_send,
 404 #endif
 405 #ifdef RB_PROFILE
 406     profile_thread,
 407     profstop,
 408     __cyg_profile_func_enter,
 409     __cyg_profile_func_exit,
 410 #endif
 411     add_event,
 412     remove_event,
 413     send_event,
 414
 415 #ifdef SIMULATOR
 416     /* special simulator hooks */
 417 #if defined(HAVE_LCD_BITMAP) && LCD_DEPTH < 8
 418     sim_lcd_ex_init,
 419     sim_lcd_ex_update_rect,
 420 #endif
 421 #endif
 422
 423     /* strings and memory */
 424     snprintf,
 425     vsnprintf,
 426     strcpy,
 427     strlcpy,
 428     strlen,
 429     strrchr,
 430     strcmp,
 431     strncmp,
 432     strcasecmp,
 433     strncasecmp,
 434     memset,
 435     memcpy,
 436     memmove,
 437     _ctype_,
 438     atoi,
 439     strchr,
 440     strcat,
 441     strlcat,
 442     memchr,
 443     memcmp,
 444     strcasestr,
 445     strtok_r,
 446     /* unicode stuff */
 447     utf8decode,
 448     iso_decode,
 449     utf16LEdecode,
 450     utf16BEdecode,
 451     utf8encode,
 452     utf8length,
 453     utf8seek,
 454
 455     /* sound */
 456     sound_set,
 457     sound_default,
 458     sound_min,
 459     sound_max,
 460     sound_unit,
 461     sound_val2phys,
 462 #ifndef SIMULATOR
 463     mp3_play_data,
 464     mp3_play_pause,
 465     mp3_play_stop,
 466     mp3_is_playing,
 467 #if CONFIG_CODEC != SWCODEC
 468     bitswap,
 469 #endif
 470 #endif
 471 #if CONFIG_CODEC == SWCODEC
 472     &audio_master_sampr_list[0],
 473     &hw_freq_sampr[0],
 474     pcm_apply_settings,
 475     pcm_play_data,
 476     pcm_play_stop,
 477     pcm_set_frequency,
 478     pcm_is_playing,
 479     pcm_is_paused,
 480     pcm_play_pause,
 481     pcm_get_bytes_waiting,
 482     pcm_calculate_peaks,
 483     pcm_get_peak_buffer,
 484     pcm_play_lock,
 485     pcm_play_unlock,
 486     pcmbuf_beep,
 487 #ifdef HAVE_RECORDING
 488     &rec_freq_sampr[0],
 489     pcm_init_recording,
 490     pcm_close_recording,
 491     pcm_record_data,
 492     pcm_record_more,
 493     pcm_stop_recording,
 494     pcm_calculate_rec_peaks,
 495     audio_set_recording_gain,
 496 #endif /* HAVE_RECORDING */
 497 #if INPUT_SRC_CAPS != 0
 498     audio_set_output_source,
 499     audio_set_input_source,
 500 #endif
 501     dsp_set_crossfeed,
 502     dsp_set_eq,
 503     dsp_dither_enable,
 504     dsp_configure,
 505     dsp_process,
 506     dsp_input_count,
 507     dsp_output_count,
 508 #endif /* CONFIG_CODEC == SWCODEC */
 509
 510     /* playback control */
 511     playlist_amount,
 512     playlist_resume,
 513     playlist_start,
 514     playlist_add,
 515     playlist_sync,
 516     playlist_remove_all_tracks,
 517     playlist_create,
 518     playlist_insert_track,
 519     playlist_insert_directory,
 520     playlist_shuffle,
 521     PREFIX(audio_play),
 522     audio_stop,
 523     audio_pause,
 524     audio_resume,
 525     audio_next,
 526     audio_prev,
 527     audio_ff_rewind,
 528     audio_next_track,
 529     audio_status,
 530     audio_current_track,
 531     audio_flush_and_reload_tracks,
 532     audio_get_file_pos,
 533 #if !defined(SIMULATOR) && (CONFIG_CODEC != SWCODEC)
 534     mpeg_get_last_header,
 535 #endif
 536 #if (CONFIG_CODEC == MAS3587F) || (CONFIG_CODEC == MAS3539F) || \
 537     (CONFIG_CODEC == SWCODEC)
 538     sound_set_pitch,
 539 #endif
 540
 541 #if !defined(SIMULATOR) && (CONFIG_CODEC != SWCODEC)
 542     /* MAS communication */
 543     mas_readmem,
 544     mas_writemem,
 545     mas_readreg,
 546     mas_writereg,
 547 #if (CONFIG_CODEC == MAS3587F) || (CONFIG_CODEC == MAS3539F)
 548     mas_codec_writereg,
 549     mas_codec_readreg,
 550     i2c_begin,
 551     i2c_end,
 552     i2c_write,
 553 #endif
 554 #endif /* !SIMULATOR && CONFIG_CODEC != SWCODEC */
 555
 556     /* menu */
 557     do_menu,
 558     /* statusbars */
 559     &statusbars,
 560     gui_syncstatusbar_draw,
 561     /* options */
 562     get_settings_list,
 563     find_setting,
 564     option_screen,
 565     set_option,
 566     set_bool_options,
 567     set_int,
 568     set_bool,
 569 #ifdef HAVE_LCD_COLOR
 570     set_color,
 571 #endif
 572
 573     /* action handling */
 574     get_custom_action,
 575     get_action,
 576 #ifdef HAVE_TOUCHSCREEN
 577     action_get_touchscreen_press,
 578 #endif
 579     action_userabort,
 580
 581     /* power */
 582     battery_level,
 583     battery_level_safe,
 584     battery_time,
 585 #ifndef SIMULATOR
 586     battery_voltage,
 587 #endif
 588 #if CONFIG_CHARGING
 589     charger_inserted,
 590 # if CONFIG_CHARGING >= CHARGING_MONITOR
 591     charging_state,
 592 # endif
 593 #endif
 594 #ifdef HAVE_USB_POWER
 595     usb_powered,
 596 #endif
 597
 598     /* misc */
 599 #if !defined(SIMULATOR) || defined(__MINGW32__) || defined(__CYGWIN__)
 600     &errno,
 601 #endif
 602     srand,
 603     rand,
 604     (qsort_func)qsort,
 605     kbd_input,
 606     get_time,
 607     set_time,
 608 #if CONFIG_RTC
 609     mktime,
 610 #endif
 611     plugin_get_buffer,
 612     plugin_get_audio_buffer,
 613     plugin_tsr,
 614     plugin_get_current_filename,
 615 #ifdef PLUGIN_USE_IRAM
 616     plugin_iram_init,
 617 #endif
 618 #if defined(DEBUG) || defined(SIMULATOR)
 619     debugf,
 620 #endif
 621 #ifdef ROCKBOX_HAS_LOGF
 622     _logf,
 623 #endif
 624     &global_settings,
 625     &global_status,
 626     talk_disable,
 627 #if CONFIG_CODEC == SWCODEC
 628     codec_thread_do_callback,
 629     codec_load_file,
 630     get_codec_filename,
 631 #endif
 632     get_metadata,
 633     mp3info,
 634     count_mp3_frames,
 635     create_xing_header,
 636     find_next_frame,
 637 #if (CONFIG_CODEC == MAS3587F) || (CONFIG_CODEC == MAS3539F)
 638     peak_meter_scale_value,
 639     peak_meter_set_use_dbfs,
 640     peak_meter_get_use_dbfs,
 641 #endif
 642 #ifdef HAVE_LCD_BITMAP
 643     read_bmp_file,
 644     read_bmp_fd,
 645 #ifdef HAVE_JPEG
 646     read_jpeg_file,
 647     read_jpeg_fd,
 648 #endif
 649     screen_dump_set_hook,
 650 #endif
 651     show_logo,
 652     tree_get_context,
 653     set_current_file,
 654     set_dirfilter,
 655
 656 #ifdef HAVE_WHEEL_POSITION
 657     wheel_status,
 658     wheel_send_events,
 659 #endif
 660
 661 #ifdef IRIVER_H100_SERIES
 662     /* Routines for the iriver_flash -plugin. */
 663     detect_original_firmware,
 664     detect_flashed_ramimage,
 665     detect_flashed_romimage,
 666 #endif
 667     led,
 668 #if (CONFIG_CODEC == SWCODEC)
 669     bufopen,
 670     bufalloc,
 671     bufclose,
 672     bufseek,
 673     bufadvance,
 674     bufread,
 675     bufgetdata,
 676     bufgettail,
 677     bufcuttail,
 678
 679     buf_get_offset,
 680     buf_handle_offset,
 681     buf_request_buffer_handle,
 682     buf_set_base_handle,
 683     buf_used,
 684 #endif
 685
 686 #ifdef HAVE_TAGCACHE
 687     tagcache_search,
 688     tagcache_search_set_uniqbuf,
 689     tagcache_search_add_filter,
 690     tagcache_get_next,
 691     tagcache_retrieve,
 692     tagcache_search_finish,
 693     tagcache_get_numeric,
 694 #ifdef HAVE_TC_RAMCACHE
 695     tagcache_fill_tags,
 696 #endif
 697 #endif
 698
 699 #ifdef HAVE_ALBUMART
 700     search_albumart_files,
 701 #endif
 702
 703 #ifdef HAVE_SEMAPHORE_OBJECTS
 704     semaphore_init,
 705     semaphore_wait,
 706     semaphore_release,
 707 #endif
 708
 709     appsversion,
 710     /* new stuff at the end, sort into place next time
 711        the API gets incompatible */
 712
 713 #ifdef HAVE_LCD_BITMAP
 714     is_diacritic,
 715 #endif
 716 };
 717
 718 int plugin_load(const char* plugin, const void* parameter)
 719 {
 720     int rc, i;
 721     struct plugin_header *hdr;
 722 #ifdef SIMULATOR
 723     void *pd;
 724 #else /* !SIMULATOR */
 725     int fd;
 726     ssize_t readsize;
 727 #if NUM_CORES > 1
 728     unsigned my_core;
 729 #endif
 730 #endif /* !SIMULATOR */
 731
 732 #if LCD_DEPTH > 1
 733     fb_data* old_backdrop;
 734 #endif
 735
 736     if (pfn_tsr_exit != NULL) /* if we have a resident old plugin: */
 737     {
 738         if (pfn_tsr_exit(!strcmp(current_plugin, plugin)) == false )
 739         {
 740             /* not allowing another plugin to load */
 741             return PLUGIN_OK;
 742         }
 743         pfn_tsr_exit = NULL;
 744         plugin_loaded = false;
 745     }
 746
 747     splash(0, ID2P(LANG_WAIT));
 748     strcpy(current_plugin, plugin);
 749
 750 #ifdef SIMULATOR
 751     hdr = sim_plugin_load((char *)plugin, &pd);
 752     if (pd == NULL) {
 753         splashf(HZ*2, str(LANG_PLUGIN_CANT_OPEN), plugin);
 754         return -1;
 755     }
 756     if (hdr == NULL
 757         || hdr->magic != PLUGIN_MAGIC
 758         || hdr->target_id != TARGET_ID) {
 759         sim_plugin_close(pd);
 760         splash(HZ*2, str(LANG_PLUGIN_WRONG_MODEL));
 761         return -1;
 762     }
 763     if (hdr->api_version > PLUGIN_API_VERSION
 764         || hdr->api_version < PLUGIN_MIN_API_VERSION) {
 765         sim_plugin_close(pd);
 766         splash(HZ*2, str(LANG_PLUGIN_WRONG_VERSION));
 767         return -1;
 768     }
 769 #else
 770     fd = open(plugin, O_RDONLY);
 771     if (fd < 0) {
 772         splashf(HZ*2, str(LANG_PLUGIN_CANT_OPEN), plugin);
 773         return fd;
 774     }
 775 #if NUM_CORES > 1
 776     /* Make sure COP cache is flushed and invalidated before loading */
 777     my_core = switch_core(CURRENT_CORE ^ 1);
 778     cpucache_invalidate();
 779     switch_core(my_core);
 780 #endif
 781
 782     readsize = read(fd, pluginbuf, PLUGIN_BUFFER_SIZE);
 783     close(fd);
 784
 785     if (readsize < 0) {
 786         splashf(HZ*2, str(LANG_READ_FAILED), plugin);
 787         return -1;
 788     }
 789     hdr = (struct plugin_header *)pluginbuf;
 790
 791     if ((unsigned)readsize <= sizeof(struct plugin_header)
 792         || hdr->magic != PLUGIN_MAGIC
 793         || hdr->target_id != TARGET_ID
 794         || hdr->load_addr != pluginbuf
 795         || hdr->end_addr > pluginbuf + PLUGIN_BUFFER_SIZE) {
 796         splash(HZ*2, str(LANG_PLUGIN_WRONG_MODEL));
 797         return -1;
 798     }
 799     if (hdr->api_version > PLUGIN_API_VERSION
 800         || hdr->api_version < PLUGIN_MIN_API_VERSION) {
 801         splash(HZ*2, str(LANG_PLUGIN_WRONG_VERSION));
 802         return -1;
 803     }
 804     plugin_size = hdr->end_addr - pluginbuf;
 805
 806     /* zero out bss area only, above guards end of pluginbuf */
 807     if (plugin_size > readsize)
 808         memset(pluginbuf + readsize, 0, plugin_size - readsize);
 809 #endif
 810
 811     *(hdr->api) = &rockbox_api;
 812     plugin_loaded = true;
 813
 814
 815 #if defined HAVE_LCD_BITMAP && LCD_DEPTH > 1
 816     old_backdrop = lcd_get_backdrop();
 817 #endif
 818     lcd_clear_display();
 819     lcd_update();
 820
 821 #ifdef HAVE_REMOTE_LCD
 822     lcd_remote_clear_display();
 823     lcd_remote_update();
 824 #endif
 825
 826     FOR_NB_SCREENS(i)
 827        viewportmanager_theme_enable(i, false, NULL);
 828
 829     cpucache_invalidate();
 830
 831 #ifdef HAVE_TOUCHSCREEN
 832     touchscreen_set_mode(TOUCHSCREEN_BUTTON);
 833 #endif
 834
 835 #ifdef HAVE_PLUGIN_CHECK_OPEN_CLOSE
 836     open_files = 0;
 837 #endif
 838
 839     rc = hdr->entry_point(parameter);
 840
 841     /* Go back to the global setting in case the plugin changed it */
 842 #ifdef HAVE_TOUCHSCREEN
 843     touchscreen_set_mode(global_settings.touch_mode);
 844 #endif
 845
 846     button_clear_queue();
 847
 848 #ifdef HAVE_LCD_BITMAP
 849     lcd_setfont(FONT_UI);
 850 #if LCD_DEPTH > 1
 851     lcd_set_backdrop(old_backdrop);
 852 #ifdef HAVE_LCD_COLOR
 853     lcd_set_drawinfo(DRMODE_SOLID, global_settings.fg_color,
 854                                    global_settings.bg_color);
 855 #else
 856     lcd_set_drawinfo(DRMODE_SOLID, LCD_DEFAULT_FG, LCD_DEFAULT_BG);
 857 #endif
 858 #else /* LCD_DEPTH == 1 */
 859     lcd_set_drawmode(DRMODE_SOLID);
 860 #endif /* LCD_DEPTH */
 861 #endif /* HAVE_LCD_BITMAP */
 862
 863
 864 #ifdef HAVE_REMOTE_LCD
 865 #if LCD_REMOTE_DEPTH > 1
 866     lcd_remote_set_drawinfo(DRMODE_SOLID, LCD_REMOTE_DEFAULT_FG,
 867                             LCD_REMOTE_DEFAULT_BG);
 868 #else
 869     lcd_remote_set_drawmode(DRMODE_SOLID);
 870 #endif
 871 #endif
 872
 873     lcd_clear_display();
 874 #ifdef HAVE_LCD_REMOTE
 875     lcd_remote_clear_display();
 876 #endif
 877
 878     FOR_NB_SCREENS(i)
 879         viewportmanager_theme_undo(i, false);
 880
 881     if (pfn_tsr_exit == NULL)
 882         plugin_loaded = false;
 883
 884 #ifdef HAVE_PLUGIN_CHECK_OPEN_CLOSE
 885     if(open_files != 0 && !plugin_loaded)
 886     {
 887         int fd;
 888         logf("Plugin '%s' leaks file handles", plugin);
 889
 890         static const char *lines[] =
 891             { ID2P(LANG_PLUGIN_ERROR),
 892               "#leak-file-handles" };
 893         static const struct text_message message={ lines, 2 };
 894         button_clear_queue(); /* Empty the keyboard buffer */
 895         gui_syncyesno_run(&message, NULL, NULL);
 896
 897         for(fd=0; fd < MAX_OPEN_FILES; fd++)
 898             if(open_files & (1<<fd))
 899                 close_wrapper(fd);
 900     }
 901 #endif
 902
 903     sim_plugin_close(pd);
 904
 905     if (rc == PLUGIN_ERROR)
 906         splash(HZ*2, str(LANG_PLUGIN_ERROR));
 907
 908     return rc;
 909 }
 910
 911 /* Returns a pointer to the portion of the plugin buffer that is not already
 912    being used.  If no plugin is loaded, returns the entire plugin buffer */
 913 void* plugin_get_buffer(size_t *buffer_size)
 914 {
 915     int buffer_pos;
 916
 917     if (plugin_loaded)
 918     {
 919         if (plugin_size >= PLUGIN_BUFFER_SIZE)
 920             return NULL;
 921
 922         *buffer_size = PLUGIN_BUFFER_SIZE-plugin_size;
 923         buffer_pos = plugin_size;
 924     }
 925     else
 926     {
 927         *buffer_size = PLUGIN_BUFFER_SIZE;
 928         buffer_pos = 0;
 929     }
 930
 931     return &pluginbuf[buffer_pos];
 932 }
 933
 934 /* Returns a pointer to the mp3 buffer.
 935    Playback gets stopped, to avoid conflicts.
 936    Talk buffer is stolen as well.
 937  */
 938 void* plugin_get_audio_buffer(size_t *buffer_size)
 939 {
 940 #if CONFIG_CODEC == SWCODEC
 941     return audio_get_buffer(true, buffer_size);
 942 #else
 943     audio_stop();
 944     talk_buffer_steal(); /* we use the mp3 buffer, need to tell */
 945     *buffer_size = audiobufend - audiobuf;
 946     return audiobuf;
 947 #endif
 948 }
 949
 950 #ifdef PLUGIN_USE_IRAM
 951 /* Initializes plugin IRAM */
 952 void plugin_iram_init(char *iramstart, char *iramcopy, size_t iram_size,
 953                       char *iedata, size_t iedata_size)
 954 {
 955     /* We need to stop audio playback in order to use codec IRAM */
 956     audio_hard_stop();
 957     memcpy(iramstart, iramcopy, iram_size);
 958     memset(iedata, 0, iedata_size);
 959     memset(iramcopy, 0, iram_size);
 960 #if NUM_CORES > 1
 961     /* writeback cleared iedata and iramcopy areas */
 962     cpucache_flush();
 963 #endif
 964 }
 965 #endif /* PLUGIN_USE_IRAM */
 966
 967 /* The plugin wants to stay resident after leaving its main function, e.g.
 968    runs from timer or own thread. The callback is registered to later
 969    instruct it to free its resources before a new plugin gets loaded. */
 970 void plugin_tsr(bool (*exit_callback)(bool))
 971 {
 972     pfn_tsr_exit = exit_callback; /* remember the callback for later */
 973 }
 974
 975 char *plugin_get_current_filename(void)
 976 {
 977     return current_plugin;
 978 }
 979
 980 static int open_wrapper(const char* pathname, int flags, ...)
 981 {
 982 /* we don't have an 'open' function. it's a define. and we need
 983  * the real file_open, hence PREFIX() doesn't work here */
 984     int fd;
 985 #ifdef SIMULATOR
 986     if (flags & O_CREAT)
 987     {
 988         va_list ap;
 989         va_start(ap, flags);
 990         fd = sim_open(pathname, flags, va_arg(ap, unsigned int));
 991         va_end(ap);
 992     }
 993     else
 994         fd = sim_open(pathname, flags);
 995 #else
 996     fd = file_open(pathname,flags);
 997 #endif
 998
 999 #ifdef HAVE_PLUGIN_CHECK_OPEN_CLOSE
1000     if(fd >= 0)
1001         open_files |= 1<<fd;
1002 #endif
1003     return fd;
1004 }
1005
1006 #ifdef HAVE_PLUGIN_CHECK_OPEN_CLOSE
1007 static int close_wrapper(int fd)
1008 {
1009     if((~open_files) & (1<<fd))
1010     {
1011         logf("double close from plugin");
1012     }
1013     if(fd >= 0)
1014         open_files &= (~(1<<fd));
1015
1016     return PREFIX(close)(fd);
1017 }
1018
1019 static int creat_wrapper(const char *pathname, mode_t mode)
1020 {
1021     int fd = PREFIX(creat)(pathname, mode);
1022
1023     if(fd >= 0)
1024         open_files |= (1<<fd);
1025
1026     return fd;
1027 }
1028 #endif /* HAVE_PLUGIN_CHECK_OPEN_CLOSE */